Curb and pavement



'(NO Model.)

" P. W. REARDON.

CURB AND PAVEMENT.

No. 52o,22o. Patented May 22,1894.

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z nmmw UNITED STATES PATENT OFFICE.

PATRICK W. REARDON, OF OAKLAND, CALIFORNIA.

CURB AND PAVEMENT.

SPECIFICATION forming part of Letters Patent No. 520,220, dated May 22,1894.

Application filed February 12, 1 8 92.

To aZZ whom it may concrm Be it known that I, PATRICK W. REARDON, acitizen of the United States, residing in Oakland, Alameda county, Stateof California, have invented an Improvement in Curbs and Pavements; andI hereby declare the following to be a full, clear, and exactdescription of the same.

My invention relates to the class of curbs and pavements.

It consists in the Construction hereinafter described and claimed.

The general object bf my invention is to provide a strong and durablecurb or retaining wall and pavement.

A particular object is to provide a proper curb or wall for pavements,whether sidewalks or streets, of that class in which the various formsof asphaltum or bitumen are used. It is the custom, at present, inlaying an asphaltum or bituminous rock sidewalk to place permanently onits sides borders of wood. These borders consist of stringers, and theypresent an unsightly appearance, for they are not in keeping with therest of the work. They have to remain there and their presenceconstitutes one of the chiet obj ections to this class of work. My curb,on the contrary, is consistent in appearance, and equal in durabilityand strength to the rest of the work, being well adapted to its use as aborder.

Another particular object is to provide a pavement for general streetwork, of the asphaltum or bituminous class, which can be made insections or blocks complete and can be laid in the roadwayexpeditiously, to form an elastic, durable and smooth surface.

Referring to the accompanying drawings for a more complete eXplanationof my invention,-Figure 1 is a vertical section of my pieces or sectionsfor pavements. Fig. 2 is a vertical cross section of a section of curb.Fig. 3 is a perspective view showing the joint of the curb sections.

A is a section of curb, wall, or pavement. This consists of a body a and'a core a'. The body is an asphaltum composition of suitable character.In practice I prefer a composition of matter made up of asphaltum,gravel and petroleum. The proportions in which these ingredients areused vary somewhat with the character and location of the work. A goodproportion is as followszbrittleness.

Serial No. 121,297. (No specimes.)

pure asphaltum, one part; fine gravel, seven parts; crude petroleum,one-fifth part. The core a' is of some hard material, wood or metal,preferably the former, and it may be in one or in several pieces as hereshown. The composition or body a is molded and pressed about the coreand completely confines it. To make the adhesion between the body andcore very strong, the core pieces, before being placed in the mold, mayb'e dipped in liquid asphalt and petroleum. The body is firm, hard andsufficiently elastic. The core of wood gives strength to the section anddoes away with all tendency to A section made thus can be whollymanufactured at the factory and sent out to the work ready to go in itsproper place.

In the case of curbs, the sections may be caused to merely abut or theymay be jointed in any suitable way as by the inclined or beveled jointat a For all the sections, but especially for those to be used forstreet paving, I prefer to make grooves & in the core a', to serve asbonds for the body composition. The meeting upper corners of thesections may be rounded and all joints will be filled with the samecomposition, so that the entire pavement will be solid and consistent.

In appearance, the curb will not be unlike the body of the walk orpavement, so that it is well adapted for forming the borders ofasphaltum and bituminous walks and pavements.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A block of the character described, consisting in a core formed ofsuperposed fiat strips a' coated with liquid asphalt and petroleum andthe outer asphalt body a inclosing said core, substantially as heroindeseribed.

2. A block of the character described comprising the core a' the uppersurface of which IOO

